Biogeographical Patterns of Endolithic Infestation in an Invasive and an Indigenous Intertidal Marine Ecosystem Engineer

Type Article
Date 2019-05
Language English
Author(s) Ndhlovu AldwinORCID1, McQuaid Christopher D.1, Nicastro KatyORCID2, Marquet NathalieORCID2, Gektidis Marcos, Monaco CristianORCID1, 3, 4, Zardi GerardoORCID1
Affiliation(s) 1 : Rhodes Univ, Dept Zool & Entomol, ZA-6140 Grahamstown, South Africa.
2 : Univ Algarve, CCMAR CIMAR Associated Lab, Campus Gambelas, P-8005139 Faro, Portugal.
3 : Univ Adelaide, Southern Seas Ecol Labs, Sch Biol Sci, Adelaide, SA 5005, Australia.
4 : Univ Adelaide, Environm Inst, Adelaide, SA 5005, Australia.
Source Diversity-basel (Mdpi), 2019-05 , Vol. 11 , N. 5 , P. 75 (13p.)
DOI 10.3390/d11050075
WOS© Times Cited 2
Note This article belongs to the Special Issue Diversity of Ecosystem Engineers in the World Coasts and Oceans
Keyword(s) Biogeographical region, Mytilus galloprovincialis, Perna perna, rocky shores, parasite
Abstract By altering the phenotypic properties of their hosts, endolithic parasites can modulate the engineering processes of marine ecosystem engineers. Here, we assessed the biogeographical patterns of species assemblages, prevalence and impact of endolithic parasitism in two mussel species that act as important ecosystem engineers in the southern African intertidal habitat, Perna perna and Mytilus galloprovincialis. We conducted large-scale surveys across three biogeographic regions along the South African coast: the subtropical east coast, dominated by the indigenous mussel, P. perna, the warm temperate south coast, where this species coexists with the invasive Mediterranean mussel, M. galloprovincialis, and the cool temperate west coast dominated by M. galloprovincialis. Infestation increased with mussel size, and in the case of M. galloprovincialis we found a significantly higher infestation in the cool temperate bioregion than the warm temperate region. For P. perna, the prevalence of infestation was higher on the warm temperate than the subtropical region, though the difference was marginally non-significant. On the south coast, there was no significant difference in infestation prevalence between species. Endolith-induced mortality rates through shell collapse mirrored the patterns for prevalence. For P. perna, endolith species assemblages revealed clear grouping by bioregions. Our findings indicate that biogeography affects cyanobacteria species composition, but differences between biogeographic regions in their effects are driven by environmental conditions.
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Ndhlovu Aldwin, McQuaid Christopher D., Nicastro Katy, Marquet Nathalie, Gektidis Marcos, Monaco Cristian, Zardi Gerardo (2019). Biogeographical Patterns of Endolithic Infestation in an Invasive and an Indigenous Intertidal Marine Ecosystem Engineer. Diversity-basel, 11(5), 75 (13p.). Publisher's official version : https://doi.org/10.3390/d11050075 , Open Access version : https://archimer.ifremer.fr/doc/00605/71689/